All alt+return combos mapped to the same escape sequence as alt+return
itself.
With this patch, alt+<mod(s)>+return map to a standard ‘CSI 27;x;13~’
sequence.
With XKB, Shift+Tab maps to XKB_KEY_ISO_Left_Tab, not
XKB_Key_Tab. Previously, we had two different lookup tables for the
two.
The tab table was correctly populated, while the ISO-left tab
wasn’t. As a result, all Shift+Tab combos (except Shift+Tab itself)
was wrong, and resulted in the same escape sequence as Shift+Tab.
Fix by using the same table for both tab and ISO-left tab.
Closes#210
Tab is one of the keys included in our "otherModifierKeys"
implementation. However, since the key sym falls outside the checks
required to trigger it, special case it and implement its sequences as
a table.
Backspace now emits DEL for all non-ctrl modifier combos, and BS for
all ctrl modifier combos.
The alt modifier prefixes DEL/BS with ESC.
This also removes my own hack of mapping ctrl+backspace to
alt+backspace.
Describe backspace behavior in both the README and the man page.
TODO: implement DECBKM to allow applications to toggle the backspace
behavior.
